So at what level do these become available? My alt is BG 5 now and still no joy.
The minimum level is actually listed in the journal. Click the More button, the Breen front, and each assignment has the minimum level below the description. Fed side it's 49 for the first three and 50 for the last two, KDF they're 47, 48, 49, 50, and 50 again in order. 47 translates to MG2, so two more levels from BG5.